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Bobbi, this thing could have been underwater for 20 hours, it only lasted 6 hours in that first mission. as its first go, is that fairly typical? or less than expected? >> well, hi, brooke. hey, this is good. and i have known captain matthews for years. he is the u.s. navy's supervisor of salvage. he's a great guy, and a smart guy. the rest of his team out there from phoenix are the experts. and they put the bluefin in. they gave it a run of six hours. it wasn't the whole 20 hours. they pulled it out. they read the data. well, they didn't pull it out, it came back out, it worked the way it was...

You're there, you're there. you're there. i'm right here. you're right there. we were very safe in our planning. and maybe a foot or two behind me. so right prior to us jumping, we all had a great feeling. high fives and feeling stoked and just let's do it. >> a two-person safety crew is there to observe the jump from start to finish and call for help in case of emergency. with everyone in place, it's go time. >> when you first step off the edge, you first have, you have zero gravity. you're kind of floating and then you start to pick up speed. the wind is blowing in your face and now you're r...

Third party. the third party communicates then every 15 minutes to air traffic, any country. that plane is tracked along precise routes over the ocean and supposed to report every 15 minutes. that's the primary communication. secondary systems, and the 777 has so much redundancy, it's hard to believe it would lose it all at once. secondary communication is a constant feed of data back to airline operations on every aspect of engine performance and how that plane is performing. so there's, you know, and the transponder then is the last layer of protection. it's a safety device that, in fact, th...

The third party communicates then every 15 minutes to air traffic, any country. that plane is tracked along precise routes over the ocean and supposed to report every 15 minutes. that's the primary communication. secondary systems, and the 777 has so much redundancy, it's hard to believe it would lose it all at once. secondary communication is a constant feed of data back to airline operations on every aspect of engine performance and how that plane is performing. so there's, you know, and the transponder then is the last layer of protection. it's a safety device that, in fact, the pilots have...

Intact than just a few square pieces. and you couldn't -- you wouldn't have square pieces. you'd have round pieces and narrow pieces. >> a guest earlier was saying when air france flight was found, there were no pieces really larger than i think a desk he said. i mean, it was in that small pieces. the malaysian air force had said that radar data indicated the plane operating without its transponders on make a u turn toward the ma malacca strait. it's hard to see what radar is picked up alone. >> the transponders are a safety device so that the people on the ground can identify that airplane an...